Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Vibration to sound

  1. Apr 25, 2005 #1
    Is there a way to turn vibrational energy(if such a thing) into acoustic energy. Like for simplicity, i say you bank a tuning fork, which sends vibrational energy through a copper wire, and it is then transformed into audible sound from a speaker. possible?
  2. jcsd
  3. Apr 25, 2005 #2


    User Avatar
    Science Advisor
    Gold Member

    Sound is vibration.

    If something is vibrating at a frequency in the audible range, and at a sufficient amplitude, you can hear it, providing it's moving enough air between you and it for your ears to detect it.

    I'm not quite sure how you want your proposed set-up to work, but anything which is vibrating at the same frequency as that tuning fork will make a sound if it shifts enough air for you to be able to detect it. This is partly why speakers are shaped as they are, - the surface area can move a lot of air. A thin copper wire vibrating axially wouldn't be able to do this nearly as well.
  4. Apr 25, 2005 #3
    well its an engine on a steel frame, a small scooter engine. could these frame vibrations be turned into sound thereby reducing stress?
  5. Apr 25, 2005 #4


    User Avatar
    Science Advisor
    Gold Member

    Not practicably.

    If the vibrations are sufficient to cause damage, then something is wrong.
  6. Apr 25, 2005 #5


    User Avatar
    Staff Emeritus
    Science Advisor

    Sound simply means that something (gas, liquid or solid) is vibrating with a frequency in the 'acoustic' range - the range in which we can hear.

    Brewnog is correct, there is no practical way to convert mechanical vibration to useful energy. It is better to dampen the vibration, and perhaps stiffen the system to reduce vibration. Excessive vibration may introduce fatigue issues.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Vibration sound Date
Sizing of a damping - spring - mass system Oct 26, 2017
What is making this sound Apr 17, 2017
Boundary conditions of that beam. Jul 4, 2016
How to reduce vibration of a fixed beam? Feb 17, 2016
Jerking of robot arm Aug 30, 2015